{"action":"Upgrade libssh to 0.11.5-0+deb13u1 or later.","affected":[{"fixed":"0.11.5-0+deb13u1","introduced":"0"}],"component":"libssh","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["0.11.5-0+deb13u1"],"id":"tcs_01M5NT5ZQR1T0PPP0JSHNNYRRD","modified_at":"2026-10-20T21:00:07.078534759Z","published_at":"2026-07-21T12:18:57.860Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-59843","https://security-tracker.debian.org/tracker/CVE-2026-59843"],"severity":{"label":"medium","score":6.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-59843#Debian:13/libssh","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-59843"}],"summary":"A flaw was found in libssh. A remote authenticated peer can advertise a zero maximum packet size in SSH_MSG_CHANNEL_OPEN, causing later channel writes to loop indefinitely and consume CPU, leading to"}